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Treatment of mustard tuber wastewater (MTWW) using a pilot-scale packed cage rotating biological contactor system: process modeling and optimization 期刊论文  OAI收割
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2021, 页码: 9
作者:  
Dong, Yang;  Chen, Youpeng;  Guo, Jinsong;  Wang, Jianhui;  Yan, Peng
  |  收藏  |  浏览/下载:34/0  |  提交时间:2021/08/20
Plasma-arc technology for the thermal treatment of chemical wastes 会议论文  OAI收割
26th Annual International Conference on Incineration and Thermal Treatment Technologies, IT3, Phoenix, AZ, United states, May 14, 2007 - May 18, 2007
作者:  
Sheng HZ(盛宏至)
收藏  |  浏览/下载:18/0  |  提交时间:2017/06/01
A new approach for the removal of mixed noise based on wavelet transform (EI CONFERENCE) 会议论文  OAI收割
ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Li Y.;  Li Y.;  Li Y.;  Li Y.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
This paper proposed a new approach for the removal of mixed noise. There are many different ways in image denoising. Donoho et al have proposed a method for image de-noising by thresholding  ambiguity is often resulted in determining the correspondence of a modulus maximum to a singularity. In the light  and indeed  we combine the merits of the two techniques to form a new approach for the removal of mixed noise. At first  the application of their method to image denoising has been extremely successful. But the method of Donoho is based on the assumption that the type of noise is only additive Gaussian noise  we used wavelet singularity detection (WSD) technique to analyze singularities of signal and noise. According to the characteristic that wavelet transform modulus maxima of impulse noise rapidly decreases as the scale increases in wavelet domain  which is not successful for impulse noise. Mallat has also presented a method for signal denoising by discriminating the noise and the signal singularities through an analysis of their wavelet transform modulus maxima (WTMM). Nevertheless  it can be accurately located with multiscale space by going through dyadic orthogonal wavelet transform and removed. Furthermore the Gaussian noise is also removed through a level-dependent thresholding algorithm  the tracing of WTMM is not just tedious procedure computationally  algorithm. The experimental results demonstrate that the proposed method can effectively detect impulse noise and remove almost all of the noise while preserve image details very well.